Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
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The catalytic converter has an oxygen sensor in front and behind it. Typically the code triggers the Check Engine Light if the readings of the two sensors are similar. This is indicative of a converter that is not working as efficiently as it should be.
That code may mean that one or more of the following has happened:
Some suggested steps for troubleshooting: